| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 10/03/2002 | WO2001084704A3 Rf power amplifier having high power-added efficiency |
| 10/03/2002 | US20020141510 Method of and apparatus for performing modulation |
| 10/03/2002 | US20020140509 Efficient AC coupled CMOS RF amplifier |
| 10/03/2002 | US20020140508 Signal amplification device |
| 10/03/2002 | US20020140506 Wide dynamic range transimpedance amplifier |
| 10/03/2002 | US20020140505 Amplitude limiting method for a differential amplifier |
| 10/03/2002 | US20020140503 High-frequency power amplifying apparatus |
| 10/03/2002 | US20020140502 RF variable gain amplifying device |
| 10/03/2002 | US20020140492 Matching circuit and semiconductor device |
| 10/03/2002 | US20020140476 Dynamic slew-rate booster for CMOS-opamps |
| 10/03/2002 | US20020139998 Voltage offset diode |
| 10/02/2002 | EP1246366A2 Temperature compensated slew rate control circuit |
| 10/02/2002 | EP1245079A1 Voltage level translation circuits |
| 10/02/2002 | EP1245078A1 Power amplifier and a method for operating a power amplifier |
| 10/02/2002 | CN2514548Y Wideband high-power linear power amplifier |
| 10/02/2002 | CN1372406A Transmitting circuit |
| 10/02/2002 | CN1092001C On-chip IC for amplifying IF signal and detecting ion receiver |
| 10/02/2002 | CN1091999C Tuning circuit for receiver, especially for television receiver |
| 10/01/2002 | US6459556 Input buffer |
| 10/01/2002 | US6459339 High-frequency circuit |
| 10/01/2002 | US6459338 Single loop output common mode feedback circuit for high performance class AB differential amplifier |
| 10/01/2002 | US6459337 System and method for noise and spurious suppression in power amplifier systems |
| 10/01/2002 | US6459336 RF amplifier system having PDM drive |
| 10/01/2002 | US6459335 Auto-calibration circuit to minimize input offset voltage in an integrated circuit analog input device |
| 10/01/2002 | US6459332 Digitally-operated analog buffer amplifiers |
| 10/01/2002 | US6459326 Method for generating a substantially temperature independent current and device allowing implementation of the same |
| 09/26/2002 | WO2002075924A2 Circuit and method for controlling a dynamic, bi-directional high voltage analog switch and ultrasound examination apparatus equipped with such a circuit |
| 09/26/2002 | WO2002075922A2 Circuit and method for input side impedance matching of a power amplifier in an electronic device |
| 09/26/2002 | WO2002075921A2 Distributed amplifier having separately biased sections |
| 09/26/2002 | WO2002075918A2 Modulator using class-e stage |
| 09/26/2002 | WO2002075786A2 Bond wire tuning of rf power transistors and amplifiers |
| 09/26/2002 | WO2001086806A3 Apparatus and method for efficiently amplifying wideband envelope signals |
| 09/26/2002 | US20020137486 Amplifier |
| 09/26/2002 | US20020137481 Power controller |
| 09/26/2002 | US20020137480 System and method for current-mode amplitude modulation |
| 09/26/2002 | US20020136326 System for controlling a class D amplifier |
| 09/26/2002 | US20020135845 Fiber optic receiver with an adjustable bandwidth post-amplifier |
| 09/26/2002 | US20020135427 High-frequency power amplifier |
| 09/26/2002 | US20020135425 Full output matching apparatus of a microwave doherty amplifier |
| 09/26/2002 | US20020135424 Current mirror circuit and analog-digital converter |
| 09/26/2002 | US20020135423 Power amplifier module |
| 09/26/2002 | US20020135422 Distributed circular geometry power amplifier architecture |
| 09/26/2002 | US20020135421 Differential current mirror system and method |
| 09/26/2002 | US20020135419 Digital amplifier with improved performance |
| 09/26/2002 | US20020135415 Circuit and method for controlling a dynamic, bi-directional high voltage analog switch |
| 09/26/2002 | US20020135045 High-frequency integrated circuit device that includes differential amplification circuit |
| 09/26/2002 | US20020134993 Bond wire tuning of RF power transistors and amplifiers |
| 09/26/2002 | DE10148238A1 Frequenzvervielfachervorrichtung und Frequenzvervielfacherschaltung Frequenzvervielfachervorrichtung and frequency multiplier |
| 09/25/2002 | EP1244210A2 Electronic circuit unit |
| 09/25/2002 | EP1244209A2 Miniaturized buffer amplifier and electronic circuit using same |
| 09/25/2002 | EP1244208A1 Power amplifying device |
| 09/25/2002 | CN2513294Y Active channel type narrow band antenna mixed amplifier |
| 09/25/2002 | CN1371566A Reflecting modulator circuit comprising negative impedance amplifier |
| 09/25/2002 | CN1371556A Method and arrangement for power amplificaion in a basestation |
| 09/25/2002 | CN1371546A Driving circuits for switch mode RF power amplifiers |
| 09/25/2002 | CN1371545A High-efficiency modulating RF amplifier |
| 09/25/2002 | CN1371168A High-efficiency sectional power amplifier |
| 09/24/2002 | US6456163 High-frequency amplifier circuit having a directly-connected bias circuit |
| 09/24/2002 | US6456162 Operational amplifier with offset voltage centering, and low-voltage compatible |
| 09/24/2002 | US6456161 Enhanced slew rate in amplifier circuits |
| 09/24/2002 | US6456159 CMOS operational amplifier |
| 09/24/2002 | US6456155 Differential amplifier circuit with offset circuit |
| 09/24/2002 | US6456141 Current pulse receiving circuit |
| 09/24/2002 | US6456140 Voltage level translation circuits |
| 09/24/2002 | US6456127 Adaptive pulse frame rate frequency control for minimization of electro-magnetic contamination in integrated switching amplifier systems |
| 09/24/2002 | US6456125 Distributed high frequency circuit equipped with bias bypass line to reduce chip area |
| 09/24/2002 | US6455837 Photodetector apparatus |
| 09/19/2002 | WO2002073795A2 High efficciency switching amplifiers |
| 09/19/2002 | WO2002073794A2 Switchless multi-resonant, multi-band power amplifier |
| 09/19/2002 | US20020132596 Power rate enhancement circuit for an RF power amplifier in a dual mode mobile phone |
| 09/19/2002 | US20020132587 Cellular telephone |
| 09/19/2002 | US20020131611 `Audio surround sound power management switching |
| 09/19/2002 | US20020130723 Radio-frequency amplifier, radio-frequency module and communication device |
| 09/19/2002 | US20020130721 Electronic circuit unit suitable for reduction in size and weight |
| 09/19/2002 | US20020130720 Distributed amplifier with transistors in a cascode configuration and negative feedback |
| 09/19/2002 | US20020130718 Variable gain circuit |
| 09/19/2002 | US20020130717 Controllable amplifier arrangement and arrangement for processing electric signals by means of such an amplifier arrangement |
| 09/19/2002 | US20020130716 Linearization circuit and technique for a power combining network, or diplexer; especially as may use high temperature superconducting filters |
| 09/19/2002 | US20020130715 System and method for adjusting separate devices concurrently |
| 09/19/2002 | US20020130698 Signal compensation circuit and demodulating circuit with high-speed and low-speed feedback loops |
| 09/19/2002 | US20020130696 Offset compensation circuit and offset compensation method |
| 09/19/2002 | US20020130684 CMOS output amplifier independent of temperature, supply voltage and manufacturing quality of transistors |
| 09/19/2002 | DE10201890A1 Schaltung und Verfahren zur Kompensation eines Hochfrequenzsignalverlustes auf einer Übertragungsleitung Circuit and method for compensating a high-frequency signal loss on a transmission line |
| 09/18/2002 | EP1241922A2 Audio surround sound power management switching |
| 09/18/2002 | EP1241785A1 Photo-detecting semiconductor circuit |
| 09/18/2002 | EP1241780A2 Audio power amplifying apparatus and method |
| 09/18/2002 | EP1241730A2 Radio-frequency amplifier, radio-frequency module and communication device |
| 09/18/2002 | EP1155495B1 Method and circuit for controlling the compensation of offset voltages of a radio receiver circuit which is integrated in a circuit module |
| 09/18/2002 | EP0729669B1 Dual-sided push-pull amplifier |
| 09/18/2002 | CN1370339A Radio repeater using non-rediative dielectric waveguide |
| 09/18/2002 | CN1369967A DC bias compensating circuit, difference amplifying circuit and photoelectric pulse converting circuit |
| 09/18/2002 | CN1369962A Operating amplifier with current feedback |
| 09/17/2002 | US6453048 Impedance converter for a condenser microphone |
| 09/17/2002 | US6452736 Magnetic recording and reproducing apparatus and a read/write amplifier having a signal transmission system with high speed of data write signal |
| 09/17/2002 | US6452645 Multiple preliminary stage circuit for television tuner |
| 09/17/2002 | US6452457 Electronic apparatus comprising a power amplifier |
| 09/17/2002 | US6452455 Capacitor bias recovery methodology |
| 09/17/2002 | US6452453 Constant-current generator, differential amplifier, and semiconductor integrated circuit |
| 09/17/2002 | US6452451 Method for adjusting a bipolar output stage for improved frequency response |
| 09/17/2002 | US6452450 Transconductance amplifier based precision half wave and full wave rectifier circuit |